研究生: |
羅經閔 Ching-Min Lo |
---|---|
論文名稱: |
利用UKIDSS-UDS資料來統計紅移1到3之間的紫外線光度密度 UKIDSS-UDS: UV-Luminosity density at 1<z<3 |
指導教授: |
傅谷石
Sebastien Foucaud |
學位類別: |
碩士 Master |
系所名稱: |
地球科學系 Department of Earth Sciences |
論文出版年: | 2013 |
畢業學年度: | 101 |
語文別: | 英文 |
論文頁數: | 51 |
中文關鍵詞: | star-forming galaxy 、star-formation rate 、star formation history |
英文關鍵詞: | star-forming galaxy, star-formation rate, star formation history |
論文種類: | 學術論文 |
相關次數: | 點閱:148 下載:1 |
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The star formation history is a key-element to understand galaxy evolution and formation. Recent studies have shown that the star-formation rate peaks at redshift z=1-3 and then decline to its local value. The physical processes responsible for the sudden quenching of star-formation are still unknown. In order to better understand the origin of these effects, we propose in this study to use the UV-luminosity as an indicator of the Star-formation rate. We take advantage of our deep NIR/optical data from the UKIDSS-UDS/SXDS survey and our very deep CFHT U-band data to compute the luminosity function of galaxies at z=1-3. Then we fit a Schechter function and integrate to compute the luminosity density to explore the evolution of the star-formation rate.
The star formation history is a key-element to understand galaxy evolution and formation. Recent studies have shown that the star-formation rate peaks at redshift z=1-3 and then decline to its local value. The physical processes responsible for the sudden quenching of star-formation are still unknown. In order to better understand the origin of these effects, we propose in this study to use the UV-luminosity as an indicator of the Star-formation rate. We take advantage of our deep NIR/optical data from the UKIDSS-UDS/SXDS survey and our very deep CFHT U-band data to compute the luminosity function of galaxies at z=1-3. Then we fit a Schechter function and integrate to compute the luminosity density to explore the evolution of the star-formation rate.
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